Shoe heel machine



Feb. 23, 1932. A. F. FROUSSARD SHOE HEEL MACHINE Filed Feb. 20, 1931 4Sheets-Sheet Fig.2.

Inventor oussard Feb. 23, 1932.

A. F. FROUSSARD SHOE HEEL MACHINE Filed Feb. 20, 1931 4 Sheets-Sheet 2Inventor A. F. ussard Att'y.

Feb. 23, 1932. A. F. FROUSSARD 1,346,029

"SHOE HEEL MACHINE Filed Feb. 20, 1951 4 Sheets-Shoe} 4 Fig. 14.

Inventor gglroussard y /fl% Att'y.

Patented F eb. 23, 1932 UNITED STATES .AIBER'I. I. FROUSSARD, OF ST.LOUIS, MISSOURI SHOE HEEL MACHINE Application filed February 20, 1931.Serial No. 517,218.

My invention relates to a shoe heel machine and particularly to amachine adapted to trim and press that portion of a shoe sole whichprojects under the heel, as well as providing means for gluing the heelin position so that the entire work of preparing the shoe and attachingthe heel may be performed by a single workman in a continuous series ofoperations.

In the accompanying drawings, which illustrate one form of machine madein accordance with my invention, Figure 1 is front elevation, the lowerpart of the supporting stand being broken away; Figure 2 is a top, andFigure 3 arear view of one of the removable trimming members; Figure 4is a perspective View of the other trimming member; Figure 5 is a sideelevation, one of the driving wheels and some of the cooperating partsbeing removed; Figure 6 is a slightly enlarged elevation taken from theopposite side from Figure 5, the other driving wheel and cooperatingparts being removed; Figure 7 is a detail view of the timing mechanism;Figure 8 is an enlarged section taken on the line 8-8 of Figure 1;Figure 9 is a section taken on the line 9-9 of Figure 8; Figure 10 is asection taken on the line 10--10 of Figure 1; Figure 11 is a sectiontaken on the line section taken on the line 12-12 of Figure 5; Figure 13is a view showing a shoe in-position on the trimmer slide; Figure 14 isa bottom View of a shoe; Figure 15 is a front view of the heel clampingframe; and Figure 16 is a side view of the clamping frame.

As shown in the drawings, the framing of the machine is supported on astand 1 and comprises a base plate 2 and a pair of side frames 3 and 4,the upper ends of which are connected by a shaft 5 pivotally mounted onwhich are the upper ends of a pair of toggles 8 and 7, the lower ends ofwhich are pivoted to plungers 8 and 9. respectively, reciprocating in aguide 10. Toggle 6 is operated by the strap 11 of an eccentric 12mounted on a shaft 13. Loosely mounted on the shaft 13 is a pulley 14adapted to drivethe shaft through a clutch 43, which may he like thatshown and described in Patent No. 1,721,902

11-11 of Figure 10; Figure 12 is a reduced granted to me July 23, 1929,and is controlled by a retractor 53 carried in a bracket 54 and actingon a dog or detent 44 only one of which is necessary as no dwell isrequired when the plunger 8 is at the lower end of its stroke. Toggle 7is operated by the strap 15 of an eccentric 16 on a shaft 17 inalignment with the shaft 13 and driven from a pulley 18 by means of aclutch 43, like that of my patent above referred to, and provided withtwo detents 44 as therein described, as it is necessary to stop theplunger 9 both at the top of its stroke to insert the work, and at thelower end thereof to perform a pressing operation, the latter named stopor dwell being automatically prolonged through a number of revolutionsof the pulle 18 by timing mechanism to be hereina ter described. Theshafts 13 and 17 are journaled in hearin s in the side frames 3 and 4,respectively, and are additionally supported at their inner ends by abearing 19 common to both shafts and carried on a pillar 20 secured tothe base plate 2. The timing mechanism shown in detail in Figure 7 iscarried by a plate 21 forming an extension of the retractor bracket 54on the side frame 4. Carried by this plate is a stud 22 on which ismounted a ratchet wheel 23 and rigidly attached cam 24. Engaging withthe ratchet wheel is a fixed pawl 25 and a movable pawl 26 carried by anarm 27 mounted to oscillate on the stud 22. A spring plunger 28 normallyholds the arm 27 against a stop pin 29 which may be set in any one ofseveral holes 30 to vary the are 35 through which the arm oscillates andcorn sequently the amount of movement imparted to the ratchet wheel byeach oscillation. The arm is actuated by a pin 31 which is positioned onthe inner face of the pulley 18 so as to contact with the end of thearm. Pivoted on the plate 21 at 32 is a lever 33 adapted to contact withthe cam 24. The free end of this lever rests upon an adjustable screw 34in one end of a lever 35 pivoted to the plate 21 at 36. Connected to theother end of the lever by a pin and slot connection 37 is a lever 38pivoted at 39. The free end of the lever bears on stop 40 on theadjacent retractor bar 53. By adjustment of the position. Upon furthermovement of the ratchet wheel the retractor will again move into thepath of the dog and hold the clutch out of operation until the ratchetwheel.

makes a complete revolution, thus holding the plunger in its lowest orpressing position during a definite number of rotations of the pulley.The duration of the pressing dwell may be varied by the position of thepin 29 in the holes 30 so that the ratchet wheel is moved a varyingnumber of teeth at each oscillation of the arm 27.

""Ca'ri'ied on the lower end of the Plunger 8 central portion of theedge of the front blade 48, extending between the blades 49, is removed(as shown in Figure 4) so that the three blades form in effect a pair ofL-shaped trimming knives which cooperate with the front and inner edgesof a pair of shearing blades 50. These blades are carried by lowercutter block 55, which is U-shaped so as to allow its insertion from therear and is held in place by a retaining plate 56. This cutting blockhas vertical movement in ways 57 in the cutter head and is normally heldin the position shown in Figure by coil springs 58 placed in the holes60 (Figure 2) in the upper face of the block. For convenience inmanufacture the outer sides of the ways 57 are formed of separate cheekpieces 61 provided with lips 62 forming stops to limit the downwardmovement of the cutter block 55. The cutter block 46 is inserted fromthe front of the cutter body, the projecting ends of the blade 48forming limiting stops, and is held in position by a turn button 63.While the blades 48 and 49 may be made integral with the block 46 andthe blades 50 integral with the block 55, I prefer to form them ofseparate pieces, both for convenience in manufacture and to permit ofeasy sharpening.

The lower end of the plunger 9 carries a presser head 64 which may beformed integral with the plunger and is provided with an opening 65(Figure 6) for the reception of an electric heating element (not shown).Formed in the lower face of the head is a guide way for the reception ofa pressing plate 66 which may be of any suitable form but, for the exactform of work shown in the drawings, has a flat lower face in which isformed a shallow rounded recess 67 (Figure 1) for the reception of thetrimmed end of the sole. The presser plate is held in position in thepresser head by a turn button 68.

Below both the cutter head and the presser head are shoe supports. Eachof these supports comprises a guide block 69 and a slide 70 movabletherein and provided with a pin 71 adapted to enter the socket of a shoelast 72 (Figure 13). Guide blocks 69 are each carried 011 a verticallymovable rod 73 passing down through the base plate 2 and a cross bar 74suspended by bolts 75 from said base plate. Surrounding the lower partof each of the rods 73 is a sleeve 76 on the upper end of which is asquare head 77 having an inclined lower face. The inclined facecooperates with a wedge 78 having a central slot through which thesleeve 76 passes and which allows of in and out movement of the wedge toraise or lower the sleeves upon the heads 77 on which bear the lowerends of coil springs 79, the upper ends of which bear against shoulderson the rods 73. The wedges 78 are moved in or out by threaded shafts 79engaging with threaded lugs 80 carried on the wedges. Shafts 79' arejournaled in brackets 81 on the cross bar 74 andprovided with handles 82by means of which they are rotated. By movin the wedges in or out thedistance which t e guide blocks 69 project above the table and theconsequent compression of the springs when the shoes are trimmed orpressed, may be regulated. Surrounding the lower ends of the sleeve 76are short springs 83 positioned between the cross bar 74 and nuts 84 onthe rods 73. These latter springs are not essential to the ,operation ofthe machine but act as cushions to prevent jar when the work is releasedby the rise of the plungers.

Carried on the left hand side of the stand is a shoe support 85 having apin 86 for engagement with the socket of a last, and on the right handside is a similar support 87 with pin 88. The support 85 is used to holdthe shoe while the sole is marked for trimming and the support 87 isused in connection with clamping devices such as shown in Figures 15 and16 to secure the heel in position. A number of these clamping devicesare used in connection with the machine as one must be left on each shoefor some time after the application of the heel to allow the glue todry. The base of each clamping device is a piece of sheet metal 89having a central opening for the passage of pin 88. Secured to the plateby pivotal connections 90 are a pair of arms 91. These arms haveadjustably secured to their threaded outer ends, by means of nuts 92, across bar 93 carrying a cam 94 provided with an operating lever 95 bymeans of which the device may be used to clamp a heel 96 in position ona shoe 97 over the end 98 of the sole.

In the operation of the machine a shoe 97 applied to a last 72 is suported on the, arm 85 and the heel positions on the shoe over the end 98of the sole. The sole is now marked along the inner edges of the heeland the heel removed. The shoe and last are now transferred to the lefthand pin h 71, as shown in Figure 13. The slide 70, carrying with it thelast and shoe, is now moved under the trimming head, the unattached end98 of the sole being guided between the upper and lower cutting blocksuntil the mark on the sole coincides with the blade 48. The left handclutch 43 is now thrown into operation to cause plunger 8 to descend.The movement of the lower cutting block will be arrested by contact withthe shoe before the end of the stroke of the plunger so that the upperand lower cutting blocks will be forced together, trimming the solealong the dotted lines 99 (Figure 14). After trimming, the last and shoeare trans ferred to the right hand'pin 71 and moved under the pressingplunger 9, the heated pressing plate 66 of which is lowered against theshoe and held against it a predetermined time by the timing mechanismheretofore described. After pressing, the last and shoe are transferredto the arm 87, a clamping device being first placed over the pin 38 sothat the last will rest on base plate 89. Glue is now applied to theheel and the heel positioned over the trimmed and pressed sole andclamped in position by the operation of the cam. The clamping devices,together with the shoe and last, may now be removed and laid away untilthe glue has set.

It will be seen that by the use of my ma chine the entire process ofpositioning the heel, including the necessary trimming and pressing ofthe sole, may be carried out by a single operator in a continuousmanner, not only saving time but insuring accurate results.

Having fully described my invention, what I claim as new and desire tosecure-by Letters Patent of the United States is:

1. In a device of the class described, the combination with a plunger,of a trimming die carried thereby, said die comprising a head having acentral way therein, a block sliding in said way and provided with across knife and a pair of longitudinal knives, the cutting edge of saidcross knife being removed between said longitudinal knives, and avertically yielding block having a pair of shearing blades cooperatingwith said knives.

2. In a device of the class described, the combination with a plunger,of a trimming die carried thereby, said die comprising a head having acentral cutting member inserted from the front thereof and provided withcutting knives, and a U-shaped block inserted from the rear thereof andcarrying shearing blades cooperating with said knives,

said U-sha (1 block being yieldingly mounted in the ie.

3. In a device of the class described, the

combination with a plunger, of a trimming die carried thereby, said diecomprisin a sad having a central way therein, a cutting member providedwith a cross knife and a pair of longitudinal knives, the edge of saidcross knife being removed betweensaid longitudinal knives, a U-shapedframe yieldingly mounted in said head, and a pair of shearing bladescarried by said frame and cooperating with said knives. In a device ofthe class described, the combination with a plunger, of operatingmechanism therefor, a work carrier cooperating with said plunger, a rodon said work carrier, a sleeve surrounding said rod, a spring interposedbetween said sleeve and work support, and a sliding wedge for raisingand lowering said sleeve.

5. In a device of the class described, the combination with a plunger,of operating mechanism therefor, a work carrier cooperating with saidplunger, a rod on said work carrier, a sleeve surrounding said rod, aspring interposed between said sleeve and work support, a wedge forraising and lowering said sleeve, and a threaded rod for actuating saidwedge.

6. In a device of the class described, the combination with a baseplate, of a plunger supported therefrom, means for operating saidplunger, a rod on said work support, a cross bar below said base plate,a sleeve surrounding said rod and vertically movable in said table, aspring interposed between said table and work support, a laterallymovable wedge for adjusting said sleeve vertically, and a threaded rodfor moving said wedge.

In testimony whereof, I hereunto aflix my signature, this 17th day ofFebruary, 1931.

ALBERT F. FROUSSARD.

